Furnace for the destruction of garbage



Aug. 13, 1929. l c. c. u vlNG FUR-NACE EUR 'THE DESTRUCTION OF GARBAGE Filed Aug. 15, 1928 2 sheets-sheet Aug.' 13, 1,929. C C, ,WING l $1,724,352

FURNACE FOB .THE DESTRUCTION OF GARBAGE Filed Aug. 15, 1928 2 sheets-sheet 2 fave/afar.' .(7 (L27/H@ latented Aug. 13, 1929.

f UNITED STATES PATENT oFlCE.

FUBNAGE FOR THE DESTRUCTION F GARBAGE. i

Application led August 15, 1928, Serial No. 299,819, and in Denmark August 20, 1927.

'The present invention relates to a furnace for the destruction of garbage. Such furnaces are known in various designs, but those generally known have the drawback that 5 they cannot work continuously, as the very large contents of slag, ashes and incombustible parts in the combustion chamber were not able to be removed during work. 'lhe essential feature of the present invention lo consists in an arrangement for continuously or intermittently removing from the combustion chamber such incombustible parts.

The invention may be carried out in practice in various ways and hereinafter is de scribed a single constructional form, but it shall immediately be pointed out that the invention shall not be limited to this one constructional form.

In the accompanying drawings is shown a constructional form of the invention,

Fig. l being a vertical longitudinal section,

Fig. 2 a section along the line II-II in Fig. 1, Fig. 3 a section along the line III--III in Fig. 1.

In this drawing the numeral 1 indicates a 'shaft furnace, well made kof refractory material and standing of legs 2. The bottom of the furnace consists of a rotatable plate 3 which by means of change gears 5, 6 may be rotated by an electromotor 7 or any other suitable source of power. The plate which 1 shall bear the whole weight of the charge,

rests'on supporting rollers 8 and is guided.

by a central mouthpiece 9 which is bolted to a foot plate and whichA serves to supply a part of the combustion air.

Over the opening of the tube `9 is arranged a pyramid 11 provided with suitable air holes. In the foot of the furnace' and immediately around the i plate 3 are ports 13 through which the ash or slag may be ref v' moved. Around the said pyramid 11 there is, in the wallof the furnace, a circular air chamber 14 with a perforated inner wall. This chamber is by one or several air iiues in communication with a blower and the mouth piece 9 is by means of another ltube 20 likewise in communication with the said blower. Somewhat higher up in the wall of the furnace there is a series of ports 16 and around these there is -a circular canal 17 with ash separator 18, serving to carry off the gas generated. Charging is eifected i through a hopper 24: with a shutter 25.

fof a shaft furnace,

' ing spiral,

gradually to sink down and be forced out through the openings 13. The number of the 'ports '13 and their arrangement may, be

varied 1n various manners according to circumstances and also the size of the lugs and studs 12 and the speed of rotation of the plate mustjbe adapt-ed to the conditions on the spot, as th composition of the garbage is different in different cities. The plate 3 f has a-central aperture through which air to pyramid 11 can be supplied.

- Having now described my invention, what I claim as new vand desire to secure by Letters Patent is:

1. Garbage destruction furnace consisting the bottom of said furnace composed of a rotatable plate, saitJ rotatable plate having a central aperture and also having thereon a plurality of lugs or studs and the like arranged in a downward winding spiral, around said plate a series of ports and concentrically on sai'd plate a pyramid, the said plate rotatable at suitable rspeeds by means of a change gear, said pyramid having suitable air perforations and adapted to receive piled on it and said plate the incombustiblel the charge of garbage, parts of said garbage during the rotation of said plate and pyramid, respectively sinking down along the spirall dlsposed lugs and studs and passing out t rough the ports.

2. Garbage destruction furnace consisting of a shaft furnace the bottom of said furnace composed of a rotatable plate, 'said rotatable plate having a central aperture and also having thereon a plurality of lugs or studs and the like arranged in a downward windaround said plate a series ofports and concentrically on said plate a pyramid, said plate rotatable at suitable speeds by means of a change gear, said pyramid having suitable air perforations and adapted to receive piled on it and said plate the charge of arbage, the incombustib e parts of said gar age during the rotation of said plate and pyramid, respectively, sinking down along the spirally disposed lugs and studs and passing out .through the surrounding ports, the combustion air supplied through a circular air chamber in the wall of the ace.

3. Garbage destruction' furnace consisting of a shaft furnace, the bottom of said furnace composed of a rotatable plate, said rotatable plate having a central aperture and also having thereon a plurality of lugs and studs and the like arranged in a downward ywinding spiral, around said plate a series of ports and concentrically on said plate a pyramid, said plate rotatable at suitable speeds by means of a change gear, said pyradown along the spirally dlsposed lugs and studs and passing out through the surrounding ports, the' combustion air slipplied'- through a circular air chamber` in the- Wall o'f the furnace, at a higher level in the shaft Y .l

furnace another row of ports communicating with a circular chamber for leading o'l the gases generated.

In testimony whereof I alix mysignature.

CARL CHRISTIAN ILVING 

